<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta content="width=device-width, initial-scale=1" name="viewport">
    <title>玉灵 QQ:7031633 Email:webrx@126.com</title>
    <style>
        body {
            background-image: url(imgs/wang_008.jpg);
        }

        /*color.css*/
        .green {
            color: #39b54a;
        }

        .bg-green {
            background-color: #39b54a;
        }

        .box {
            width: 600px;
            height: 480px;
            color: #198754;

            /* #0000ff 可以简写#00f */
            /*background-color: #f0f;*/
            /*background-color: #ff00ff;*/

            /* 最一后00完全透明 */
            /*background-color: #ff00ff00;*/
            /*background-color: #ff00ff33;*/

            /* #ff0000 */
            /*background-color: rgb(255, 0, 0);*/

            /*background-color: rgba(255, 0, 0, .5);*/

            /*透明色*/
            /*background-color: transparent;*/
            background-color: rgba(0, 0, 0, .5);
        }

        .box .arr {

            width: 0;
            height: 0;
            font-size: 0;
            border: 20px solid transparent;
            /*border-left-color: green;*/
            border-top-color: green;
            border-bottom-color: green;
        }
    </style>
</head>

<body>
<div class="box">
    <h1>hello world</h1>
    <br>
    <div class="arr"></div>
    <span>wwwww</span>
</div>

<hr>
<h2 class="bg-green" style="color:#eee;">hhhhhhhhhhhhhh</h2>


</body>
</html>
